| 摘要 |
PURPOSE:To drastically reduce labor of maintenance and control, to easily perform water quality control and to dispense with chemicals by heating raw water, filtrating the same by activated carbon and a superprecise filter, treating it by a reverse osmotic membrane and an electric desalter, furthermore treating it by ultraviolet rays and thereafter treating it by an ultrafiltration membrane and then supplying it while performing ultraviolet-ray treatment. CONSTITUTION:In a stage for producing sterilized and purified water, firstly water 1 is heated by steam or a heater 5 and filtrated by an activated carbon filter 6 in the following stage. Furthermore it is filtrated by a superprecise filter 9 in the ensuing stage and passed through a stage for treating water by a reverse osmotic membrane treating device 12. Ionic components are removed in the treating stage of an electric desalter 13. Further in the following treating stage of an ultrafiltration membrane treating device, sterilizing treatment by ultraviolet rays is previously performed. Furthermore in the following circulating and supplying device, purified water is circulated while performing treatment of ultraviolet rays and supplied to the respective use points. |
